HD6433044 Datasheet, PDF (206/867 Pages) Hitachi Semiconductor – Hitachi Single-Chip Microcomputer

• Repeat mode
Bit
7
6
5
4
3
2
1
0
Initial value
Read/Write
Bit
Undetermined
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
ETCRH
Transfer counter
7
6
5
4
3
2
1
0
Initial value
Read/Write
Undetermined
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
ETCRL
Initial count
In repeat mode, ETCRH functions as an 8-bit transfer counter and ETCRL holds the initial
transfer count. ETCRH is decremented by 1 each time one transfer is executed. When ETCRH
reaches H'00, the value in ETCRL is reloaded into ETCRH and the same operation is repeated.
The ETCRs are not initialized by a reset or in standby mode.
192